Improvement in let-off and take-up motions for looms



lUNITED STATES PATENT OFFICE.

D.l BASSETT, OF KILLINGLY, CONNECTICUT.

IMPROVEMENTIN LET-OFF AND TAKE-UP MOTIONS FOR LOOMS.

Specification forming part of Letters Patent No. 5 i ,003, dated November `21, 1865.

To all whom 'it may concern.-

Be it known that I, D. BASSETT, of Killingly, in the county of Windham and State of Connecticut, have invented a new and useful Improvement in Let-Oft' and Take-Up Motions for Looms; and l do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the Aaccompanying drawings, forming part of this specitication, in which- Figure l is a side view o'f a loomv to which my invention has been applied. Fig. 2is an elevation of a transverse section, taken on the liney of Fig. 3, looking in the direction of the arrow'.` Fig. 3 is aplan of that end of the loom whichcon'rains my improvement. Fig. 4 is anelev'ato'not' a section taken on the line'x ot' Fig. l. Fig. 5 is an elevation of a section -takenon the line fw'of Fig. 1.

Similary letters ot' reference indicate like parts.

This invention embraces several particulars, one ofx'vhich relates to the use of a balanced adjustable lever resting against the yarn-beam vfor the purpose of governing the letting-ott' motion.` Another relates to the manner of actuating the let-oipawl-lever by means of a revolving Wi per. Another relates to the construction ot thelet-oli and take-up levers. Another relates to actuating the take-up pawl by'means of a shoe on the sword. Another relates to the mode of transmitting motion to the cloth-beam fram the ratchet-wheel which is driven by the ta {,e-up pawl-lever.

A designates the frame of the loom, whose Y lay B is vibrated through connecting-rods O and cranks AD, one set of'which lonly is seen inV l the drawings, the 'cranks'D being vformed'on the driving-shaft E. The gear-wheel F on one end of that shaft gears with agear-wheel, G,on the lower shaft, K,`which latter, like the main shaft, has its bearin gs in the sides of the frame. The shaft K has a collar, e, fastened to it by a set-screw, from which collar project wipers L L for operating the'pawl-lever P. The wipers extend from opposite sides of the collar z', and by means of the set-screw they can be properly adjusted on the shaft. The journals of the yarn-beam Y'rcst in sockets made for them in the back' part of the frame, in which they are held by hooks Z on each end of the frame,

vpawl-lever.

only one of them, however, being seen in the drawings. To release the yarn-beam when it is to be removed, it is only necessary to raise the hooks.

N is a gear-'wheel fixed on the yarn-beam. It is engaged by a vworm'formed on a transverse shaft, M, which is sustained in bearings made for itin, the brackets h. Upon the shaft M, near its inner end, is iixed a ratchet-wheel, O, which is engaged bythe pawls l 2 3 ot' the pawl-lever P. This pawl-lever hasits fulcrum on the shaft M, between the hub of the ratchetwheel 0 andthe adjacent bracket h. The end g of the lever extends toward the adjacent side ot' the frame, so as to be in the path of rotation of the wipers L, which successively depress that end of the lever,and thereby raise the otherv eild,'"'v'i'hicli"is"n ile' f"o'r 1'"'`t'i'ar6 of a circle, having a curved slot, i, which slot receives the ends of pins j, which are held toA the lever by nuts 7. Thel other ends of the.

pins carry pawls l 2 3, which are held loosely thereon by means of nuts 6. The pawls canmove the ratchet from the impulse of the pawl-- lever a less distance than the measure of 'one tooth. The extent of .movement given tothe pawl-lever P by the wipers L is determined by th'e adjusting-screw c, which passes up through the Weighted end s of the lever Q. This lever Q- is supported on a bracket, R, and it has a broad end, which passes beneath and is held up' against the yarn-beam by its weighted end S.. Sfinc' the adjusting-screw lpasses through "the iatt'i' of:A the lever Q, it follows that wheh.

the yarn-'beam is full the screw S will be raised, and as diameter of the yarn on -the beam is lessened the screw will be lowered, thereby determining the height of the arm g of the When this arm is at its lowest position, which will be when the yarn-beam is full, the wipers 'L remain in contact with it only a little while and move it only a little distance; but as the yarn-beam becomes less in diameter that end of the lever Q which holds up the pawl-lever gradually takes a lower position, the pawls 1 2 3`are suffered to descend in an equal degree, and the end g teeth 'of a ratchetwheeha, fast on a transverse y engages with a gear-wheel, I, fixed on the' i justing-screw X, and the extentof movements 2 v snee?.

of the pawl-lever to rise higher'in the path of the wipers. f

The :take-up lever has a pawl-lever, V, of like construction with theypawl-lever P. The extent of its vibration is determined by .an adj usting-scrcw, X, which works in abracket, W, extending from4 the' frame A'. The p'awls of this lever are only two in number, et and 5, in this example of my invention, and engage the shaft, H, which is supported by brackets ff. See Fig. 1. This shaft has also a worm,wl1ich cloth-beam J.l

The sword B of the lay B has a. shoe, b, which extends inwardlyT so as to come over the arm Uof thepawl-leverV at eachinward movement of the lay.A The said arm Uis formed at its end into a plate which is set at an angle 'inclining downward. toward thesword of kthe lay, as 4seen in Fig. 2.

T designates the breast-beam of the loom.-

The operation of the take-unis eEected by the vibrations of the lay, the shoe b, when the lay retires after each beatstriking the arm U and causing the pawls of the pawl-leverV to rotate'the ratchet-wheel a, and so give rotary motion to the shaft H, whose' worm will move the gear-wheel I of' the cloth-beam and cause the latter to take np the woven fabric. The height of the arm U will be determined by the position given to the bearing end of the adcf the pawl'flever, and consequently the move- .A inent of th'e worm-shaft, will of course be more or less in the same proportion as the said arm is in alower or higher position in the path of the shoe.

The pawlsof the pawLlcverV may he greater in number, if desired, so as to enable the pawllever V to move the ratchetwheel a distance 3. Adjusting the height-of the arms Uand v g, respectively, of the paWl-levers by means of screws whose ends form I es'ts or bearing surfaces for the heavy ends of said pawls, substantially as described.,

4. Operating the pawl lever Vby means of a shoe on oneof the swords of' the lay, sub-y stantially as described. t

DANIEL BASSETT. Witnesses.:

Tues. J. EVANS," BENJ. N. THOMAS.

2. Actuating the let-oft' pawl-lever P by 

